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EP4037236A1 - Signalisation dans des rrc et mac de mappage de ressources de pdsch à des fins de formulations d'hypothèses de signaux de référence périodiques et semi-persistants - Google Patents

Signalisation dans des rrc et mac de mappage de ressources de pdsch à des fins de formulations d'hypothèses de signaux de référence périodiques et semi-persistants Download PDF

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Publication number
EP4037236A1
EP4037236A1 EP21217920.4A EP21217920A EP4037236A1 EP 4037236 A1 EP4037236 A1 EP 4037236A1 EP 21217920 A EP21217920 A EP 21217920A EP 4037236 A1 EP4037236 A1 EP 4037236A1
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Prior art keywords
csi
resources
control message
resource
pdsch
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German (de)
English (en)
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EP4037236C0 (fr
EP4037236B1 (fr
Inventor
Siva Muruganathan
Sebastian FAXÉR
Shiwei Gao
Helka-Liina MÄÄTTÄNEN
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Telefonaktiebolaget LM Ericsson AB
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Telefonaktiebolaget LM Ericsson AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the disclosed subject matter relates generally to telecommunications. Certain embodiments relate more particularly to concepts such as resource mapping for reference signal assumptions.
  • LTE Release-13 Long Term Evolution (LTE), until Release 13, all Reference Signals (RSs) that a User Equipment (UE) uses for Channel State Information (CSI) calculation, such as Cell specific Reference Signal (CRS) and CSI Reference Signal (CSI-RS), were non-precoded such that UE is able to measure the raw channel and calculate CSI feedback including preferred precoding matrix based on that the RS. As the number of Transmit (Tx) antenna ports increases, the amount of feedback becomes larger.
  • RSs Reference Signals
  • CRS Cell specific Reference Signal
  • CSI-RS Channel State Information
  • Tx Transmit
  • LTE Release-10 when closed loop precoding with 8Tx was introduced, a two-stage precoder approach was introduced where UE first selects a wideband coarse precoder and then selects a second precoder per subband.
  • Another possible approach is that network beamforms the CSI-RS and UE calculates CSI feedback using the beamformed CSI-RS.
  • This approach was adopted in LTE Release 13 as one option for the Full Dimension Multi-Input Multi-Output (FD-MIMO) operation as described in the next section. Improvements in reference signals are needed.
  • FD-MIMO Full Dimension Multi-Input Multi-Output
  • a method performed by a wireless device includes for activating SP ZP CSI-RS includes receiving, from a network node, a control message that indicates the activation of one or more SP ZP CSI-RS resources; and activating, based on the control message, the one or more SP ZP CSI-RS resources.
  • ZP CSI-RS may be used for rate matching around other wireless devices and a SP ZP CSI-RS resource may be activated without activating any Non-Zero Power (NZP) CSI-RS, CSI-Interference Measurement (CSI-IM), or CSI reporting for the wireless device.
  • NZP Non-Zero Power
  • CSI-IM CSI-Interference Measurement
  • control message is a Medium Access Control (MAC) Control Element (CE).
  • control message is separate from a control message indicating NZP, CSI-RS, CSI- IM, or CSI.
  • control message comprises a bitmap, where each bit in the bitmap indicates if one SP ZP CSI-RS resource set is active or not.
  • the SP ZP CSI-RS resources which the bitmap refers to is an RRC configured list of SP ZP CSI-RS resources.
  • control message comprises one or more identifiers, where each identifier identifies a preconfigured SP ZP CSI-RS resource set.
  • the one or more identifiers only contain a single SP CSI-RS resource identifier.
  • the one or more identifiers refer to at least one SP ZP CSI-RS resource set.
  • the one or more activated SP ZP CSI-RS resources are not used for Physical Downlink Shared Channel (PDSCH) transmission.
  • PDSCH Physical Downlink Shared Channel
  • the method also includes, in response to activating the one or more SP ZP CSI-RS resources, PDSCH resource mapping around the one or more SP ZP CSI-RS resources.
  • the method also includes, receiving, from the network node, a deactivation control message that indicates the deactivation of one or more SP ZP CSI-RS resources; and deactivating, based on the deactivation control message, the one or more SP ZP CSI-RS resources.
  • the deactivation control message is a MAC CE.
  • the method also includes, in response to deactivating the one or more SP ZP CSI-RS resources, PDSCH resource mapping around resources for the one or more SP ZP CSI-RS.
  • the network node is a base station. In some embodiments, the network node operates in a Fifth Generation (5G) New Radio (NR) cellular communications network.
  • 5G Fifth Generation
  • NR New Radio
  • a method performed by a network node for activating a SP ZP CSI-RS includes transmitting, to a wireless device, a control message that indicates the activation of one or more SP ZP CSI-RS resources.
  • Release 13 FD-MIMO specification in LTE supports an enhanced CSI reporting called Class B CSI for beamformed CSI-RS.
  • an LTE RRC_CONNECTED UE i.e. a UE connected to an LTE network, can be configured with K CSI-RS resources, where each resource may correspond to a beam (where 1 ⁇ K ⁇ 8) where each CSI-RS resource can consist of 1, 2, 4 or 8 CSI-RS ports.
  • a CSI-RS Resource Indicator was introduced in addition to Precoding Matrix Indicator (PMI), Rank Indicator (RI) and Channel Quality Indicator (CQI).
  • the UE reports the CSI-RS index (CRI) to indicate the preferred beam, where the CRI is wideband.
  • CRI CSI-RS index
  • Other CSI components such as RI/CQI/PMI are based on legacy codebook (i.e. Release 12) and CRI reporting periodicity is an integer multiple of the RI reporting periodicity.
  • An illustration of beamformed CSI-RS is given in Figure 1 .
  • non-periodic beamformed CSI-RS with two different sub-flavors was introduced.
  • the two sub-flavors are aperiodic CSI-RS and semi-persistent CSI-RS.
  • the CSI-RS resources are configured for the UE as in Release 13 with K CSI-RS resources, and a Medium Access Control (MAC) Control Element (CE) activation of N out of the K CSI-RS resources (N ⁇ K) is specified.
  • MAC Medium Access Control
  • CE Control Element
  • the K CSI-RS resources are configured to be aperiodic CSI-RS or semi-persistent CSI-RS
  • the UE waits for MAC CE activation of N out of the K CSI-RS resources.
  • a Downlink Control Information (DCI) trigger is sent to the UE so that one of the activated CSI-RS resources is selected by the UE for CSI computation and subsequent reporting.
  • DCI Downlink Control Information
  • the UE can use the activated CSI-RS resources for CSI computation and reporting.
  • the MAC CE activation/deactivation command is specified in Section 5.19 of TS36.321 where the specification text is reproduced below.
  • the network may activate and deactivate the configured CSI-RS resources of a serving cell by sending the Activation/Deactivation of CSI-RS resources MAC control element described below.
  • the configured CSI-RS resources are initially deactivated upon configuration and after a handover.
  • the Activation/Deactivation of CSI-RS resources MAC control element is identified by a MAC PDU subheader with a Logical Channel IDentifier (LCID) as specified in table 6.2.1-1. It has variable size as the number of configured CSI process (N) and is defined in Figure 2A .
  • Activation/Deactivation CSI-RS command is defined in Figure 2B and activates or deactivates CSI-RS resources for a CSI process. Each CSI process is associated with one or more CSI-RS resource and one or more CSI-Interference Measurement (CSI-IM) resources.
  • Activation/Deactivation of CSI-RS resources MAC control element applies to the serving cell on which the UE receives the Activation/Deactivation of CSI-RS resources MAC control element.
  • Activation / Deactivation of CSI-RS resources MAC control elements is defined as follows:
  • SS Block synchronization sequences
  • NR-PSS primary
  • NR-SSS secondary
  • PBCH Physical Broadcast CHannel
  • DMRSs Demodulated Reference Signals
  • SS Burst Set a set of SS Bursts may be grouped together (denoted "SS Burst Set"), where the SS Bursts in the SS Burst Sets are assumed to have some relation to each other. Both SS Bursts and SS Burst Sets have their respective given periodicity.
  • the network could configure time-repetition within one SS Burst in a wide beam.
  • at least some of these signals and physical channels e.g. SS Block
  • would be transmitted in multiple beams which could be done in different manners depending on network implementation, as shown in Figure 3 .
  • a CSI report setting contains the parameters associated with CSI reporting including the type of CSI reporting.
  • the gNB RRC configures the UE with S c CSI triggering states.
  • Each triggering state contains the aperiodic CSI report setting to be triggered along with the associated aperiodic CSI-RS resource sets.
  • aperiodic CSI-RS and/or aperiodic CSI reporting can be triggered according to the following conditions:
  • the gNB first RRC configures the UE with the semi-persistent CSI-RS resources.
  • the semi-persistent CSI-RS resource or semi-persistent CSI-RS resource set is then activated via MAC CE.
  • Quasi co-location is a natural way to describe the relation between two different signals originating from the same Transmission Reception Point (TRP) and that can be received using the same spatial receiver parameters.
  • TRP Transmission Reception Point
  • the UE should be able to assume it can use the same receive beam when receiving the two difference signals that have spatial QCL.
  • the spatial QCL relations between different types of reference RS and target RS are shown in the table below. Also, shown in the table are the associated signaling methods. The last column of the table simply indicates that the target and reference RSs can belong to different component carriers (CCs) and different bandwidth parts (BWPs).
  • CCs component carriers
  • BWPs bandwidth parts
  • QCL parameter Reference RS Target RS Signaling method Reference RS and Target RS should belong to the same CC/BWP or not Spatial SS Block (SSB)
  • P CSI-RS RRC Can be on different CCs/BWPs
  • Spatial SSB SP CSI-RS SP CSI-RS activation signal Can be on different CCs/BWPs
  • Spatial P CSI-RS Another P CSI-RS RRC Can be on different CCs/BWPs Spatial SSB or P/SP CSI-RS AP CSI-RS RRC or RRC+MAC CE for configuration, indication with DCI Can be on different CCs/BWPs
  • NZP non-zero power
  • CSI-IM CSI-IM
  • Zero-power (ZP) CSI-RS resources can also be configured to the UEs. As its name implies, the gNB does not transmit anything on the Resource Elements (REs) occupied by the ZP CSI-RS configured to the UE.
  • ZP CSI-RS resources are configured to the UEs for three purposes. Firstly, ZP CSI-RS can be configured to a UE in order to protect NZP CSI-RS transmissions from one or more neighboring cells. Secondly, ZP CSI-RS can be used for the purposes of indicating whether or not PDSCH is mapped to CSI-IM. Thirdly, (aperiodic) ZP CSI-RS can be used to indicate that the UE shall rate match, e. g.
  • the PDSCH resource mapping its PDSCH around a (beamformed) NZP CSI-RS intended for another UE to measure upon. It is mainly for this third purpose the aperiodic ZP CSI-RS field in the Downlink (DL) DCI is comprised.
  • the network will not transmit anything on the REs occupied by the CSI-IM, so the UE can measure the inter-cell interference thereon.
  • ZP CSI-RS is typically configured to overlap with the CSI-IM.
  • the CSI-IM is colloquially referred to as a ZP CSI-RS based interference measurement resource (IMR).
  • the IMR can be aperiodic (AP IMR), semi-persistent (SP IMR) or periodic IMR (P IMR).
  • SP IMR semi-persistent
  • P IMR periodic IMR
  • an NZP CSI-RS can also be configured as an IMR.
  • ZP CSI-RS used for the purposes of indicating whether or not PDSCH is mapped to CSI-IM is configured independently.
  • TRP2 is a potential future serving cell.
  • the UE is configured with NZP CSI-RS1 and CSI-IM1 to measure the desired channel from TRP1 and the interference from TRP2, respectively.
  • the UE is configured with NZP CSI-RS2 and CSI-IM2 to measure the desired channel from TRP2 and the interference from TRP1, respectively.
  • the UE When the UE measures CSI corresponding to TRP2, the PDSCH from TRP1 that is currently received by the UE serves as the interference.
  • PDSCH mapping should be allowed on REs corresponding to CSI-IM2 and a ZP CSI-RS does not need to be independently configured to overlap with CSI-IM2.
  • ZP CSI-RS and CSI-IM is configured independently.
  • NR supports aperiodic ZP CSI-RS (AP ZP CSI-RS) and periodic ZP CSI-RS (P ZP CSI-RS).
  • SP CSI-RS used for channel measurement purposes also known as channel measurement resource or CMR
  • SP CMR channel measurement resource
  • CMR channel measurement resource
  • IMR IMR
  • CMR semi-persistent channel measurement resource
  • IMR semi-persistent interference measurement resource
  • One option is to use different MAC CEs for the following:
  • MAC MEDIUM ACCESS CONTROL
  • Certain aspects of the present disclosure and their embodiments may provide solutions to the aforementioned or other challenges.
  • a method performed by a wireless device includes for activating SP ZP CSI-RS includes receiving, from a network node, a control message that indicates the activation of one or more SP ZP CSI-RS resources; and activating, based on the control message, the one or more SP ZP CSI-RS resources.
  • ZP CSI-RS may be used for rate matching around other wireless devices and a SP ZP CSI-RS resource may be activated without activating any Non-Zero Power (NZP) CSI-RS, CSI-Interference Measurement (CSI-IM), or CSI reporting for the wireless device.
  • NZP Non-Zero Power
  • CSI-IM CSI-Interference Measurement
  • a separate MAC CE message other than the one for SP CSI-RS, SP CSI-IM, or SP CSI reporting is used to activate/deactivate SP ZP CSI-RS resources.
  • a common SP CSI-IM may be configured for all UEs and a periodic ZP CSI-RS may be configured with the same resource as the SP CSI-IM without any additional dynamic signaling for rate matching around SP CSI-IM.
  • a common SP ZP CSI-RS may be configured which is enable when at least one SP CSI reporting is activated and disabled when all SP CSI reporting are deactivated. The enabling and disabling can be done through MAC control messages.
  • Certain embodiments may provide one or more of the following technical advantage(s).
  • an advantage of both embodiments may be that a signaling overhead is reduced when compared to using different MAC CE messages for activating SP CMR, SP IMR, SP ZP CSI-RS, and SP CSI reporting on PUCCH.
  • the embodiments allow either flexible rate matching with low resource overhead or simple signaling.
  • Radio Node As used herein, a "radio node” is either a radio access node or a wireless device.
  • Radio Access Node As used herein, a "radio access node” or “radio network node” is any node in a radio access network of a cellular communications network that operates to wirelessly transmit and/or receive signals.
  • a radio access node include, but are not limited to, a base station (e.g., a New Radio (NR) base station (gNB) in a Third Generation Partnership Project (3GPP) Fifth Generation (5G) NR network or an enhanced or evolved Node B (eNB) in a 3GPP Long Term Evolution (LTE) network), a high-power or macro base station, a low-power base station (e.g., a micro base station, a pico base station, a home eNB, or the like), and a relay node.
  • a base station e.g., a New Radio (NR) base station (gNB) in a Third Generation Partnership Project (3GPP) Fifth Generation (5G) NR network or an enhanced or evolved Node B (eNB) in a
  • a "core network node” is any type of node in a core network.
  • Some examples of a core network node include, e.g., a Mobility Management Entity (MME), a Packet Data Network Gateway (P-GW), a Service Capability Exposure Function (SCEF), or the like.
  • MME Mobility Management Entity
  • P-GW Packet Data Network Gateway
  • SCEF Service Capability Exposure Function
  • a “wireless device” is any type of device that has access to (i.e., is served by) a cellular communications network by wirelessly transmitting and/or receiving signals to a radio access node(s).
  • a wireless device include, but are not limited to, a User Equipment device (UE) in a 3GPP network and a Machine Type Communication (MTC) device.
  • UE User Equipment device
  • MTC Machine Type Communication
  • Network Node As used herein, a "network node” is any node that is either part of the radio access network or the core network of a cellular communications network/system.
  • FIG. 5 illustrates one example of a cellular communications network 500 according to some embodiments of the present disclosure.
  • the cellular communications network 500 is a Fifth Generation (5G) New Radio (NR) network.
  • the cellular communications network 500 includes base stations 502-1 and 502-2, which in LTE are referred to as eNBs and in 5G NR are referred to as gNBs, controlling corresponding macro cells 504-1 and 504-2.
  • the base stations 502-1 and 502-2 are generally referred to herein collectively as base stations 502 and individually as base station 502.
  • the macro cells 504-1 and 504-2 are generally referred to herein collectively as macro cells 504 and individually as macro cell 504.
  • the cellular communications network 500 also includes a number of low power nodes 506-1 through 506-4 controlling corresponding small cells 508-1 through 508-4.
  • the low power nodes 506-1 through 506-4 can be small base stations (such as pico or femto base stations) or Remote Radio Heads (RRHs), or the like.
  • RRHs Remote Radio Heads
  • one or more of the small cells 508-1 through 508-4 may alternatively be provided by the base stations 502.
  • the low power nodes 506-1 through 506-4 are generally referred to herein collectively as low power nodes 506 and individually as low power node 506.
  • the small cells 508-1 through 508-4 are generally referred to herein collectively as small cells 508 and individually as small cell 508.
  • the base stations 502 (and optionally the low power nodes 506) are connected to a core network 510.
  • the base stations 502 and the low power nodes 506 provide service to wireless devices 512-1 through 512-5 in the corresponding cells 504 and 508.
  • the wireless devices 512-1 through 512-5 are generally referred to herein collectively as wireless devices 512 and individually as wireless device 512.
  • the wireless devices 512 are also sometimes referred to herein as UEs.
  • Figure 6 illustrates one example of the operation of a network node (e.g., a base station 502) and a wireless device 512 for activating a PDSCH mapping rule in accordance with some embodiments of the present disclosure.
  • the network node sends, to the wireless device 512, a control message (e.g., a MAC CE) to activate a PDSCH mapping rule (step 600).
  • the wireless device 512 determines whether or not the PDSCH is mapped to resources of a SP IMR (step 602).
  • a control message e.g., a MAC CE
  • Figure 7 illustrates one example of the operation of a network node (e.g., a base station 502) and a wireless device 512 for activating a Semi-Persistent, SP, Zero Power, ZP, Channel State Information Reference Signal, CSI-RS in accordance with some embodiments of the present disclosure.
  • the network node sends, to the wireless device 512, a control message (e.g., a MAC CE) that indicates activation of one or more a SP ZP CSI-RS resources (e.g., a bitmap) (step 700).
  • the wireless device 512 activates the one or more SP ZP CSI-RS resources (step 702).
  • the network node may optionally send, to the wireless device 512, a control message (e.g., a MAC CE) that indicates deactivation of one or more a SP ZP CSI-RS resources (e.g., a bitmap) (step 704). Then, the wireless device 512 deactivates the one or more SP ZP CSI-RS resources (step 706).
  • a control message e.g., a MAC CE
  • a SP ZP CSI-RS resources e.g., a bitmap
  • Figure 8 illustrates one example of the operation of a network node (e.g., a base station 502) and a wireless device 512 for activating a Semi-Persistent, SP, Zero Power, ZP, Channel State Information Reference Signal, CSI-RS in accordance with some embodiments of the present disclosure.
  • the network node sends, to the wireless device 512, a configuration for SP CSI-IM resources where all other wireless devices (512) in a cell comprising the wireless device (512) receive the same configuration (step 800).
  • the wireless device 512 determines whether to rate match, e.g., PDSCH resource map, around the SP CSI-IM resources (step 802).
  • the same MAC CE can also be used to activate a SP CSI report on PUCCH.
  • One further benefit of introducing a SP ZP CSI-RS is that it allows the gNB to indicate rate matching around another UEs SP NZP CSI-RS, or, to protect a SP NZP CSI-RS of another cell.
  • a periodic reporting configuration can be linked to only a periodic RS configuration and semipersistent reporting can be linked to either a periodic or a semipersistent (P/SP) RS configuration.
  • P/SP semipersistent
  • Some embodiments describe an RRC configuration which gives rate matching assumption for periodic and semipersistent reference signal configuration.
  • two different ways of signaling for MAC CE activation of SP ZP CSI-RS for PDSCH resource mapping are provided.
  • the same MAC CE that is used to activate SP CMR and SP CSI-IM is used to activate SP ZP CSI-RS for resource mapping.
  • This MAC CE message can also indicate whether or not PDSCH is mapped to semi-persistent CSI-IM.
  • this MAC CE can also activate SP CSI reporting on PUCCH.
  • An advantage of both embodiments may be that a signaling overhead is reduced when compared to using different MAC CE messages for activating SP CMR, SP CSI-IM, SP ZP CSI-RS, and SP CSI reporting on PUCCH.
  • the linkage between SP CMR, SP CSI-IM, and SP ZP CSI-RS can be given in either MeasLinkConfig or ReportConfig for CSI reporting.
  • MeasLinkConfig and ReportConfig are RRC information elements (IE) representing measurement link configurations and reporting configurations, respectively.
  • IE RRC information elements
  • SP CMR and SP CSI-IM are present in either MeasLinkConfig or ReportConfig.
  • SP ZP-CSI-RS if SP ZP-CSI-RS is present, UE assumes SP ZP-CSI-RS for rate matching instead of CSI-IM.
  • Each such linkage can be associated with an Identifier (ID) (henceforth referred to as measID or reportID).
  • ID Identifier
  • the activation of SP CMR, SP CSI-IM and/or SP ZP CSI-RS can be done by pointing only to either measID or reportID in a MAC CE.
  • SP CSI-RS used for CMR can be defined in an RRC configured parameter SP-CSI-RS Config.
  • SP-CSI-RS Config can include the corresponding SP CSI-IM and a report ID corresponding to a ReportConfig.
  • the ReportConfig contains the details of the SP CSI reporting on PUCCH to be activated.
  • SP-CSI-RS config can also include SP ZP CSI-RS.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is included in the SP-CSI-RS config.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is not included in the SP-CSI-RS config.
  • the SP CMR, SP CSI-IM and the SP CSI reporting on PUCCH are defined in a MeasLinkConfig with a measID.
  • the MeasLinkConfig can also include SP ZP CSI-RS.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is included in MeasLinkConfig.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is not included in MeasLinkConfig.
  • a MAC CE indicates the measID to jointly activate a given combination of SP CMR, SP CSI-IM, SP CSI reporting, and/or SP ZP CSI-RS.
  • the SP CMR, SP CSI-IM, and the SP CSI reporting on PUCCH are defined in a ReportConfig with reportlD.
  • the ReportConfig can also include SP ZP CSI-RS.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is included in ReportConfig.
  • the SP ZP CSI-RS corresponding to the SP CSI-IM is not included in ReportConfig.
  • a MAC CE then indicates the reportlD to jointly activate a given combination of SP CMR, SP CSI-IM, SP ZP CSI-RS, and SP CSI reporting.
  • a bit R1 in the MAC CE activating the SP CSI-IM indicates whether or not PDSCH is mapped to the SP CSI-IM.
  • the linkage between SP CMR, SP CSI-IM, and SP ZP CSI-RS can be given in either MeasLinkConfig or ReportConfig.
  • all three entities i.e., SP CMR, SP CSI-IM, and SP ZP CSI-RS
  • MeasLinkConfig all three entities (i.e., SP CMR, SP CSI-IM, and SP ZP CSI-RS) are present in either MeasLinkConfig or ReportConfig. If the bit R1 is set to "1", then PDSCH is not mapped to the resources of SP CSI-IM and PDSCH is mapped around the resources in SP ZP CSI-RS. If R1 is set to "0", PDSCH is mapped to the resources of SP CSI-IM and the SP ZP CSI-RS defined in either MeasLinkConfig or ReportConfig is ignored.
  • the activation of SP CMR, SP CSI-IM and/or SP ZP CSI-RS can be done by pointing only to either measID or report
  • a joint activation of a SP CSI reporting on PUCCH is performed using the same MAC CE.
  • the SP CSI-RS used for CMR can be defined in an RRC configured parameter SP-CSI-RS Config.
  • SP-CSI-RS config can include the corresponding SP CSI-IM, SP ZP CSI-RS and a report ID corresponding to a ReportConfig.
  • the report config contains the details of the SP CSI reporting on PUCCH to be activated.
  • the SP CMR, SP CSI-IM, SP ZP CSI-RS and the SP CSI reporting on PUCCH are defined in a MeasLinkConfig with a measlD. If the bit R1 is set to "1", then PDSCH is not mapped to the resources of SP CSI-IM and PDSCH is mapped around the resources in SP ZP CSI-RS. If R1 is set to "0", PDSCH is mapped to the resources of SP CSI-IM and the SP ZP CSI-RS defined in MeasLinkConfig is ignored.
  • a MAC CE indicates the measlD along with dedicated bit R1 to jointly activate a given combination of SP CMR, SP CSI-IM, SP CSI reporting, and/or SP ZP CSI-RS.
  • the SP CMR, SP CSI-IM, and the SP CSI reporting on PUCCH are defined in a ReportConfig with reportlD. If the bit R1 is set to "1", then PDSCH is not mapped to the resources of SP CSI-IM and PDSCH is mapped around the resources in SP ZP CSI-RS. If R1 is set to "0", PDSCH is mapped to the resources of SP CSI-IM and the SP ZP CSI-RS defined in ReportConfig is ignored.
  • a MAC CE indicates the reportlD along with dedicated bit R1 to jointly activate a given combination of SP CMR, SP CSI-IM, SP ZP CSI-RS, and SP CSI reporting.
  • no configuration of SP ZP CSI-RS resource in MeasLinkConfig or ReportConfig is required as the rate matching of PDSCH around the SP CSI-IM can be controlled directly by the bit R1. If R1 is set to 1 then PDSCH is not mapped to the resource elements of the SP CSI-IM while the opposite occurs if R1 is set to 0.
  • ZP CSI-RS may be used for rate matching, e.g., PDSCH resource mapping, around other UEs NZP CSI-RS it may be beneficial to activate a SP ZP CSI-RS resource without activating any NZP CSI-RS, CSI-IM, or CSI reporting for the UE. Therefore, in some embodiments, a separate MAC CE message is used to activate/deactivate SP ZP CSI-RS resources.
  • the activation/deactivation message comprises a bitmap of N bits, where each bit in the bitmap indicates if one SP ZP CSI-RS resource is activate or not.
  • the SP ZP CSI-RS resources which the bitmap refers to may be an RRC configured list of SP ZP CSI-RS resources.
  • the activation/deactivation message may comprise a list of SP ZP CSI-RS resource identifier to be activated/deactivated.
  • the list may in some embodiments be of size one and thus only contains a single SP CSI-RS resource identifier.
  • each entry in the list may be accompanied by another bit which indicates if the SP CSI-RS resource is activated or deactivated.
  • the UE side assumption is that when ZP-CSI-RS is activated, UE rate matches, e.g., PDSCH resource map, around this ZP-CSI RS and not around possible active CSI-IM resource.
  • UE rate matches around an active CSI-IM, and other default assumption.
  • a corresponding RRC configuration for periodic RS is that if in RS resource configuration for periodic RS, a ZP-CSI-RS configuration is present, UE rate matches around this ZP-CSI RS and not around the configured CSI-IM resource.
  • a SP CSI-IM resource is shared by all UEs in a cell, i.e., the same SP CSI-IM resource (i.e. periodicity, slot offset, time-frequency REs in a slot) is configured for all UEs in a cell.
  • a UE may not start interference measurement on the SP CSI-IM until after an associated SP CSI report is activated.
  • FIG. 12 is a schematic block diagram of a radio access node 1200 according to some embodiments of the present disclosure.
  • the radio access node 1200 may be, for example, a base station 502 or 506.
  • the radio access node 1200 includes a control system 1202 that includes one or more processors 1204 (e.g., Central Processing Units (CPUs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), and/or the like), memory 1206, and a network interface 1208.
  • the radio access node 1200 includes one or more radio units 1210 that each includes one or more transmitters 1212 and one or more receivers 1214 coupled to one or more antennas 1216.
  • the radio unit(s) 1210 is external to the control system 1202 and connected to the control system 1202 via, e.g., a wired connection (e.g., an optical cable).
  • the radio unit(s) 1210 and potentially the antenna(s) 1216 are integrated together with the control system 1202.
  • the one or more processors 1204 operate to provide one or more functions of a radio access node 1200 as described herein.
  • the function(s) are implemented in software that is stored, e.g., in the memory 1206 and executed by the one or more processors 1204.
  • Figure 13 is a schematic block diagram that illustrates a virtualized embodiment of the radio access node 1200 according to some embodiments of the present disclosure. This discussion is equally applicable to other types of network nodes. Further, other types of network nodes may have similar virtualized architectures.
  • a "virtualized" radio access node is an implementation of the radio access node 1200 in which at least a portion of the functionality of the radio access node 1200 is implemented as a virtual component(s) (e.g., via a virtual machine(s) executing on a physical processing node(s) in a network(s)).
  • the radio access node 1200 includes the control system 1202 that includes the one or more processors 1204 (e.g., CPUs, ASICs, FPGAs, and/or the like), the memory 1206, and the network interface 1208 and the one or more radio units 1210 that each includes the one or more transmitters 1212 and the one or more receivers 1214 coupled to the one or more antennas 1216, as described above.
  • the control system 1202 is connected to the radio unit(s) 1210 via, for example, an optical cable or the like.
  • the control system 1202 is connected to one or more processing nodes 1300 coupled to or included as part of a network(s) 1302 via the network interface 1208.
  • Each processing node 1300 includes one or more processors 1304 (e.g., CPUs, ASICs, FPGAs, and/or the like), memory 1306, and a network interface 1308.
  • functions 1310 of the radio access node 1200 described herein are implemented at the one or more processing nodes 1300 or distributed across the control system 1202 and the one or more processing nodes 1300 in any desired manner.
  • some or all of the functions 1310 of the radio access node 1200 described herein are implemented as virtual components executed by one or more virtual machines implemented in a virtual environment(s) hosted by the processing node(s) 1300.
  • additional signaling or communication between the processing node(s) 1300 and the control system 1202 is used in order to carry out at least some of the desired functions 1310.
  • the control system 1202 may not be included, in which case the radio unit(s) 1210 communicates directly with the processing node(s) 1300 via an appropriate network interface(s).
  • a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of radio access node 1200 or a node (e.g., a processing node 1300) implementing one or more of the functions 1310 of the radio access node 1200 in a virtual environment according to any of the embodiments described herein is provided.
  • a carrier comprising the aforementioned computer program product is provided. The carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory).
  • FIG 14 is a schematic block diagram of the radio access node 1200 according to some other embodiments of the present disclosure.
  • the radio access node 1200 includes one or more modules 1400, each of which is implemented in software.
  • the module(s) 1400 provide the functionality of the radio access node 1200 described herein. This discussion is equally applicable to the processing node 1300 of Figure 13 where the modules 1400 may be implemented at one of the processing nodes 1300 or distributed across multiple processing nodes 1300 and/or distributed across the processing node(s) 1300 and the control system 1202.
  • FIG. 15 is a schematic block diagram of a UE 1500 according to some embodiments of the present disclosure.
  • the UE 1500 includes one or more processors 1502 (e.g., CPUs, ASICs, FPGAs, and/or the like), memory 1504, and one or more transceivers 1506 each including one or more transmitters 1508 and one or more receivers 1510 coupled to one or more antennas 1512.
  • processors 1502 e.g., CPUs, ASICs, FPGAs, and/or the like
  • memory 1504 e.g., RAM, programmable gate array, and/or the like
  • transceivers 1506 each including one or more transmitters 1508 and one or more receivers 1510 coupled to one or more antennas 1512.
  • the functionality of the UE 1500 described above may be fully or partially implemented in software that is, e.g., stored in the memory 1504 and executed by the processor(s) 1502.
  • a computer program including instructions which, when executed by at least one processor, causes the at least one processor to carry out the functionality of the UE 1500 according to any of the embodiments described herein is provided.
  • a carrier comprising the aforementioned computer program product is provided.
  • the carrier is one of an electronic signal, an optical signal, a radio signal, or a computer readable storage medium (e.g., a non-transitory computer readable medium such as memory).
  • FIG 16 is a schematic block diagram of the UE 1500 according to some other embodiments of the present disclosure.
  • the UE 1500 includes one or more modules 1600, each of which is implemented in software.
  • the module(s) 1600 provide the functionality of the UE 1500 described herein.
  • a communication system includes a telecommunication network 1700, such as a 3GPP-type cellular network, which comprises an access network 1702, such as a RAN, and a core network 1704.
  • the access network 1702 comprises a plurality of base stations 1706A, 1706B, 1706C, such as NBs, eNBs, gNBs, or other types of wireless Access Points (APs), each defining a corresponding coverage area 1708A, 1708B, 1708C.
  • Each base station 1706A, 1706B, 1706C is connectable to the core network 1704 over a wired or wireless connection 1710.
  • a first UE 1712 located in coverage area 1708C is configured to wirelessly connect to, or be paged by, the corresponding base station 1706C.
  • a second UE 1714 in coverage area 1708A is wirelessly connectable to the corresponding base station 1706A. While a plurality of UEs 1712, 1714 are illustrated in this example, the disclosed embodiments are equally applicable to a situation where a sole UE is in the coverage area or where a sole UE is connecting to the corresponding base station 1706.
  • the telecommunication network 1700 is itself connected to a host computer 1716, which may be embodied in the hardware and/or software of a standalone server, a cloud-implemented server, a distributed server, or as processing resources in a server farm.
  • the host computer 1716 may be under the ownership or control of a service provider, or may be operated by the service provider or on behalf of the service provider.
  • Connections 1718 and 1720 between the telecommunication network 1700 and the host computer 1716 may extend directly from the core network 1704 to the host computer 1716 or may go via an optional intermediate network 1722.
  • the intermediate network 1722 may be one of, or a combination of more than one of, a public, private, or hosted network; the intermediate network 1722, if any, may be a backbone network or the Internet; in particular, the intermediate network 1722 may comprise two or more sub-networks (not shown).
  • the communication system of Figure 17 as a whole enables connectivity between the connected UEs 1712, 1714 and the host computer 1716.
  • the connectivity may be described as an Over-the-Top (OTT) connection 1724.
  • the host computer 1716 and the connected UEs 1712, 1714 are configured to communicate data and/or signaling via the OTT connection 1724, using the access network 1702, the core network 1704, any intermediate network 1722, and possible further infrastructure (not shown) as intermediaries.
  • the OTT connection 1724 may be transparent in the sense that the participating communication devices through which the OTT connection 1724 passes are unaware of routing of uplink and downlink communications.
  • the base station 1706 may not or need not be informed about the past routing of an incoming downlink communication with data originating from the host computer 1716 to be forwarded (e.g., handed over) to a connected UE 1712. Similarly, the base station 1706 need not be aware of the future routing of an outgoing uplink communication originating from the UE 1712 towards the host computer 1716.
  • a host computer 1802 comprises hardware 1804 including a communication interface 1806 configured to set up and maintain a wired or wireless connection with an interface of a different communication device of the communication system 1800.
  • the host computer 1802 further comprises processing circuitry 1808, which may have storage and/or processing capabilities.
  • the processing circuitry 1808 may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions.
  • the host computer 1802 further comprises software 1810, which is stored in or accessible by the host computer 1802 and executable by the processing circuitry 1808.
  • the software 1810 includes a host application 1812.
  • the host application 1812 may be operable to provide a service to a remote user, such as a UE 1814 connecting via an OTT connection 1816 terminating at the UE 1814 and the host computer 1802.
  • the host application 1812 may provide user data which is transmitted using the OTT connection 1816.
  • the communication system 1800 further includes a base station 1818provided in a telecommunication system and comprising hardware 1820 enabling it to communicate with the host computer 1802 and with the UE 1814.
  • the hardware 1820 may include a communication interface 1822 for setting up and maintaining a wired or wireless connection with an interface of a different communication device of the communication system 1800, as well as a radio interface 1824 for setting up and maintaining at least a wireless connection 1826 with the UE 1814 located in a coverage area (not shown in Figure 18 ) served by the base station 1818.
  • the communication interface 1822 may be configured to facilitate a connection 1828 to the host computer 1802.
  • connection 1828 may be direct or it may pass through a core network (not shown in Figure 18 ) of the telecommunication system and/or through one or more intermediate networks outside the telecommunication system.
  • the hardware 1820 of the base station 1818 further includes processing circuitry 1830, which may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions.
  • the base station 1818 further has software 1832 stored internally or accessible via an external connection.
  • the communication system 1800 further includes the UE 1814 already referred to.
  • the UE's 1814 hardware 1834 may include a radio interface 1836 configured to set up and maintain a wireless connection 1826 with a base station serving a coverage area in which the UE 1814 is currently located.
  • the hardware 1834 of the UE 1814 further includes processing circuitry 1838, which may comprise one or more programmable processors, ASICs, FPGAs, or combinations of these (not shown) adapted to execute instructions.
  • the UE 1814 further comprises software 1840, which is stored in or accessible by the UE 1814 and executable by the processing circuitry 1838.
  • the software 1840 includes a client application 1842.
  • the client application 1842 may be operable to provide a service to a human or non-human user via the UE 1814, with the support of the host computer 1802.
  • the executing host application 1812 may communicate with the executing client application 1842 via the OTT connection 1816 terminating at the UE 1814 and the host computer 1802.
  • the client application 1842 may receive request data from the host application 1812 and provide user data in response to the request data.
  • the OTT connection 1816 may transfer both the request data and the user data.
  • the client application 1842 may interact with the user to generate the user data that it provides.
  • the host computer 1802, the base station 1818, and the UE 1814 illustrated in Figure 18 may be similar or identical to the host computer 1716, one of the base stations 1706A, 1706B, 1706C, and one of the UEs 1712, 1714 of Figure 17 , respectively.
  • the inner workings of these entities may be as shown in Figure 18 and independently, the surrounding network topology may be that of Figure 17 .
  • the OTT connection 1816 has been drawn abstractly to illustrate the communication between the host computer 1802 and the UE 1814 via the base station 1818 without explicit reference to any intermediary devices and the precise routing of messages via these devices.
  • the network infrastructure may determine the routing, which may be configured to hide from the UE 1814 or from the service provider operating the host computer 1802, or both. While the OTT connection 1816 is active, the network infrastructure may further take decisions by which it dynamically changes the routing (e.g., on the basis of load balancing consideration or reconfiguration of the network).
  • the wireless connection 1826 between the UE 1814 and the base station 1818 is in accordance with the teachings of the embodiments described throughout this disclosure.
  • One or more of the various embodiments improve the performance of OTT services provided to the UE 1814 using the OTT connection 1816, in which the wireless connection 1826 forms the last segment. More precisely, the teachings of these embodiments may improve the downlink resource utilization efficiency and thereby provide benefits such as improved UE throughputs and network capacity.
  • a measurement procedure may be provided for the purpose of monitoring data rate, latency, and other factors on which the one or more embodiments improve.
  • the measurement procedure and/or the network functionality for reconfiguring the OTT connection 1816 may be implemented in the software 1810 and the hardware 1804 of the host computer 1802 or in the software 1840 and the hardware 1834 of the UE 1814, or both.
  • sensors may be deployed in or in association with communication devices through which the OTT connection 1816 passes; the sensors may participate in the measurement procedure by supplying values of the monitored quantities exemplified above, or supplying values of other physical quantities from which the software 1810, 1840 may compute or estimate the monitored quantities.
  • the reconfiguring of the OTT connection 1816 may include message format, retransmission settings, preferred routing, etc.; the reconfiguring need not affect the base station 1814, and it may be unknown or imperceptible to the base station 1814. Such procedures and functionalities may be known and practiced in the art.
  • measurements may involve proprietary UE signaling facilitating the host computer 1802's measurements of throughput, propagation times, latency, and the like. The measurements may be implemented in that the software 1810 and 1840 causes messages to be transmitted, in particular empty or 'dummy' messages, using the OTT connection 1816 while it monitors propagation times, errors, etc.
  • FIG 19 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station, and a UE which may be those described with reference to Figures 17 and 18 .
  • the host computer provides user data.
  • sub-step 1902 (which may be optional) of step 1900, the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE.
  • step 1906 the base station transmits to the UE the user data which was carried in the transmission that the host computer initiated, in accordance with the teachings of the embodiments described throughout this disclosure.
  • step 1908 the UE executes a client application associated with the host application executed by the host computer.
  • FIG 20 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station, and a UE which may be those described with reference to Figures 17 and 18 .
  • the host computer provides user data.
  • the host computer provides the user data by executing a host application.
  • the host computer initiates a transmission carrying the user data to the UE.
  • the transmission may pass via the base station, in accordance with the teachings of the embodiments described throughout this disclosure.
  • step 2004 (which may be optional), the UE receives the user data carried in the transmission.
  • FIG 21 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station, and a UE which may be those described with reference to Figures 17 and 18 .
  • the UE receives input data provided by the host computer. Additionally or alternatively, in step 2102, the UE provides user data.
  • sub-step 2104 (which may be optional) of step 2100, the UE provides the user data by executing a client application.
  • sub-step 2106 (which may be optional) of step 2102, the UE executes a client application which provides the user data in reaction to the received input data provided by the host computer.
  • the executed client application may further consider user input received from the user.
  • the UE initiates, in sub-step 2108 (which may be optional), transmission of the user data to the host computer.
  • the host computer receives the user data transmitted from the UE, in accordance with the teachings of the embodiments described throughout this disclosure.
  • FIG 22 is a flowchart illustrating a method implemented in a communication system, in accordance with one embodiment.
  • the communication system includes a host computer, a base station, and a UE which may be those described with reference to Figures 17 and 18 .
  • the base station receives user data from the UE.
  • the base station initiates transmission of the received user data to the host computer.
  • the host computer receives the user data carried in the transmission initiated by the base station.
  • any appropriate steps, methods, features, functions, or benefits disclosed herein may be performed through one or more functional units or modules of one or more virtual apparatuses.
  • Each virtual apparatus may comprise a number of these functional units.
  • These functional units may be implemented via processing circuitry, which may include one or more microprocessor or microcontrollers, as well as other digital hardware, which may include DSPs, special-purpose digital logic, and the like.
  • the processing circuitry may be configured to execute program code stored in memory, which may include one or several types of memory such as ROM, RAM, cache memory, flash memory devices, optical storage devices, etc.
  • Program code stored in memory includes program instructions for executing one or more telecommunications and/or data communications protocols as well as instructions for carrying out one or more of the techniques described herein.
  • the processing circuitry may be used to cause the respective functional unit to perform corresponding functions according one or more embodiments of the present disclosure.
  • a method performed by a base station (502) for activating a semi-persistent Physical Downlink Shared Channel, PDSCH, mapping rule comprising: transmitting (600), to a wireless device (512), a control message to activate a Semi-Persistent, SP, PDSCH mapping rule.
  • control message is a Medium Access Control, MAC, Control Element, CE.
  • control message contains a first identifier that identifies at least one of a preconfigured SP Channel Measurement Resource, CMR, a preconfigured SP Interference Measurement, IMR, and a preconfigured SP Zero Power, ZP, Channel State Information Reference Signal, CSI-RS, and wherein, optionally, the control message contains a second identifier that identifies the preconfigured SP CSI report.
  • activating the PDSCH mapping rule comprises transmitting a control message containing an identifier bit which indicates to the wireless device whether to map PDSCH to the resources occupied by the preconfigured SP IMR.
  • control message contains a first identifier that identifies at least one of the preconfigured SP CMR, the preconfigured SP IMR, and the preconfigured SP ZP CSI-RS, and wherein, optionally, the control message contains a second identifier that identifies the preconfigured SP CSI report; and, optionally,
  • a method performed by a base station (502) for activating a Semi-Persistent, SP, Zero Power, ZP, Channel State Information Reference Signal, CSI-RS comprising: transmitting (700), to a wireless device (512), a control message that indicates the activation of one or more SP ZP CSI-RS resources.
  • control message is a Medium Access Control, MAC, Control Element, CE.
  • control message comprises a bitmap, wherein each bit in the bitmap indicates if one SP ZP CSI-RS resource is active or not.
  • control message comprises one or more identifiers, where each identifier identifies a preconfigured SP ZP CSI-RS resource.
  • a method performed by a base station (502) for activating a Semi-Persistent, SP, Zero Power, ZP, Channel State Information Reference Signal, CSI-RS comprising: transmitting (800), to a wireless device (512), a configuration for SP CSI Interference Measurement, CSI-IM, resources where all other wireless devices (512) in a cell comprising the wireless device (512) receive the same configuration.
  • a communication system including a host computer comprising:
  • the communication system of the pervious embodiment further including the base station.
  • the communication system of the previous 2 embodiments further including the UE, wherein the UE is configured to communicate with the base station.
  • a User Equipment configured to communicate with a base station, the UE comprising a radio interface and processing circuitry configured to perform the method of the previous 3 embodiments.
  • a communication system including a host computer comprising:
  • the cellular network further includes a base station configured to communicate with the UE.
  • a communication system including a host computer comprising:
  • the communication system of the previous 2 embodiments further including the base station, wherein the base station comprises a radio interface configured to communicate with the UE and a communication interface configured to forward to the host computer the user data carried by a transmission from the UE to the base station.
  • a communication system including a host computer comprising a communication interface configured to receive user data originating from a transmission from a User Equipment, UE, to a base station, wherein the base station comprises a radio interface and processing circuitry, the base station's processing circuitry configured to perform any of the steps of any of the Group B embodiments.
  • the communication system of the previous embodiment further including the base station.
  • a Method of activating a Semi-Persistent, SP, Physical Downlink Shared Channel, PDSCH mapping rule in a wireless device comprising at least one of:
  • the MAC CE message contains a first identifier that identifies at least one of the preconfigured SP CMR, the preconfigured SP IMR, and the preconfigured SP ZP CSI-RS, and wherein the MAC CE contains a second identifier that identifies the preconfigured SP CSI report.
  • the method of embodiments D1 where activating the PDSCH mapping rule comprises receiving a MAC CE message containing an identifier bit which indicates to the wireless devise whether to map PDSCH to the resources occupied by the preconfigured SP IMR.
  • D7 The method of D1, where the SP CMR is a SP CSI-RS.
  • D8 The method of D1, where the SP IMR is a SP CSI Interference Measurement, CSI-IM.
  • a method of activating preconfigured Semi-Persistent, SP, Zero Power, ZP, Channel State Information Reference Signal, CSI-RS, in a wireless device comprising receiving a Medium Access Control, MAC, Control Element, CE, message from a network node wherein the MAC CE message indicates the activation of one or more SP ZP CSI-RS resources.
  • D10 The method of D9, where the MAC CE message comprises a bitmap, wherein each bit in the bitmap indicates if one SP ZP CSI-RS resource is active or not.
  • D11 The method of either one of D9-D10, where the MAC CE message comprises one or more identifier, where each identifier identifies a preconfigured SP ZP CSI-RS resource.

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EP21217920.4A 2018-01-12 2019-01-11 Signalisation dans des rrc et mac de mappage de ressources de pdsch à des fins de formulations d'hypothèses de signaux de référence périodiques et semi-persistants Active EP4037236B1 (fr)

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EP19705565.0A EP3738264B1 (fr) 2018-01-12 2019-01-11 Signalisation dans des rrc et mac de mappage de ressources de pdsch à des fins de formulations d'hypothèses de signaux de référence périodiques et semi-persistants

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US10582489B2 (en) 2018-01-12 2020-03-03 Telefonaktiebolaget Lm Ericsson (Publ) Signaling in RRC and MAC for PDSCH resource mapping for periodic and semipersistent reference signal assumptions
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ES2907176T3 (es) 2022-04-22
ES2992254T3 (es) 2024-12-11
KR102537406B1 (ko) 2023-05-26
KR20210113695A (ko) 2021-09-16
EP3738264A1 (fr) 2020-11-18
EP4037236C0 (fr) 2024-10-09
KR102301580B1 (ko) 2021-09-15
IL275460B2 (en) 2023-09-01
KR20200101463A (ko) 2020-08-27
EP4037236B1 (fr) 2024-10-09
DK3738264T3 (da) 2022-01-24
PT3738264T (pt) 2022-01-18
PL3738264T3 (pl) 2022-04-25
MY205692A (en) 2024-11-06
JP2021507644A (ja) 2021-02-22
IL275460B1 (en) 2023-05-01
MX2020007413A (es) 2020-09-14
CN111587553B (zh) 2023-06-23
CN111587553A (zh) 2020-08-25
WO2019138380A1 (fr) 2019-07-18
IL275460A (en) 2020-08-31
JP6987257B2 (ja) 2021-12-22

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